I am actaully suprised you DO get nailed by the DS laser. since it only is suppose to target the Rebel Capital ships.
to complete tat mission, set your lasers to defensive, then go full throttle to the executor, Link your missiles, and targer the Shield Generators. If your going fast enuf you should be able to avoid enemy fire. It is okay to get a lock on, jsut make sure to launch the missiles when your about .75 km out. fly away, and do the same thing for the other gens... the other rebel fighters should hel ypiu out enuf. Then once the generators are gone, make a b-line to the bouy as fast as possible. since at the harder levels you might not have enuf time to get there
BOW DOWN BEFORE the Official Forum Pun-isher
Official XWA flight instructor
get busy with it!